My paper 1939-54 100-470 models lists EC-152 as 1946 only, with serial numbers 001 thru 3121. This is probably the exact same page of the same manual I pointed to 2 posts above because the page number and "Revised August 1954" at the bottom of the page are the same. FC is listed as 1947-50.
My .PDF copy 1939-53 100-370 models also lists EC-152 as 1946 only, with serial numbers 001 thru 3121. Revised December 1953. FC is listed 1947-50.
My .PDF copy GM Parts Sales United Motors System Master Parts Catalog for GMC Trucks model series 100 Thru 470 also lists EC-152 as 1946 only, with serial numbers 001 thru 3121. Revised 2-1-56. FC is listed 1947-50.
Summary: All 3 of these documents list EC-152 as 1946 models and FC as 1947-59 models.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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